YOU SAID:
how about we go to a party tonight
INTO JAPANESE
今夜パーティーにいかがですか
BACK INTO ENGLISH
How about a party tonight
INTO JAPANESE
今夜のパーティーはどうですか
BACK INTO ENGLISH
How is the party tonight
INTO JAPANESE
今夜のパーティーはどうですか
BACK INTO ENGLISH
How is the party tonight
That didn't even make that much sense in English.